Fasmov Heavy Duty Photographic Sandbag Studio Video Sand Bag for Light Stands, Boom Stand, Tripod,Pack of 4 Each pouch: about 9" x 10" Useful with boom arms, light stands, tripod, etc Nylon construction, double zipper Each sandbag rated for 20lbs Bag is empty Double zipper System for extra security Made from heavy duty nylon material Helps to protect your lighting equipment from accidents Tripod is not included. Bag is empty. Can be filled with gravel, sand, rocks, or any other material to add weight